A DC battery ladle car steering and battery replacement system

Abstract

The present invention provides a steering and battery exchange system for a DC battery ladle car, which relates to the field of ladle cars and comprises a car body, a guide rail and a rotating table. The guide rail is arranged on the ground, and wheels are arranged under the car body, so that the car body can move on the guide rail through the wheels. A placement groove is arranged at the bottom of the car body, in which a battery can be placed, a limiting structure is arranged in the car body, and a battery exchange groove and a charging compartment are also arranged in the rotating table. Compared with the prior art, the present invention has the following beneficial effects: when the car body moves onto the rotating table, the car body can be limited by a support arm on a limiting wall, so that the car body stops on the rotating table, and the guide rail on the rotating table can be docked with other guide rails on the ground through the rotation of the rotating table, so that the car body can continue to travel along other guide rails on the ground after the rotating table rotates.

Description

Technical Field

[0001] The invention relates to the field of ladle cars, and in particular to a steering and battery replacement system for a direct current battery ladle car. Background Art

[0002] Ladle cars are a type of electric flat cars used in steel mills to transport ladles. Due to the high temperatures of molten steel, slag, etc., ladle cars are needed as a means of transportation to avoid burns. However, ladle cars need to be connected to cables as a power source. During use, the cables cause the site to be cluttered and affect the steering of the ladle car, causing great inconvenience. A ladle car easy to turn with publication number CN114570920A has been retrieved, which includes a support frame, an upper end of the middle part of the support frame is provided with a mounting frame for placing the ladle, and four corners of the lower end of the support frame are respectively provided with wheel groups that are rotatably connected, and two groups of wheel groups located at the front end and the rear end of the support frame are respectively connected through a connecting frame, and the middle part of the connecting frame is rotatably connected to the support frame through a slewing support bearing group, and the outer sides of the two groups of wheel groups at the front end of the support frame are respectively provided with a power mechanism, and the power mechanism includes a driving motor and a reducer that are connected in power, and the output end of the reducer is connected in power to one of the wheels of the wheel group; each group of the wheel group includes an external wheel frame, the top of the wheel frame is fixedly connected to the connecting frame, and two rotatably connected wheels are arranged in parallel inside the wheel frame, and the wheels are rail wheels that match the track; lower limit blocks are provided at the corresponding positions of the two ends of the connecting frame and the support frame, and the support frame is provided with an upper limit block corresponding to the lower limit block.

[0003] However, in the above technology, the front and rear wheel groups at the lower end of the support frame are linked through the connecting frame, so that the wheel group needs a large area when turning along the arc guide rail, and the cable also has a certain influence on the driving of the ladle car when turning. Summary of the invention

[0004] The problem to be solved by the present invention is that the ladle car is powered by a battery and the car body is driven to rotate by a rotating table and a limiting wall, so that the car body can be turned in a smaller space.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is a DC battery ladle car steering and battery replacement system, comprising a car body, a guide rail and a rotating platform, the guide rail is arranged on the ground, wheels are arranged under the car body, and the car body can be moved on the guide rail by the wheels, characterized in that: a placement groove is arranged at the bottom of the car body, and the battery can be placed in the placement groove, and a limiting structure is also arranged in the car body, and the limiting structure is used to fix the battery;

[0006] A limit wall, a battery exchange slot and a charging compartment are arranged on the rotating platform. The rotating platform is connected to a hydraulic motor for driving the rotating platform. A guide rail is also arranged on the rotating platform. Two limit walls are arranged vertically and oppositely on the rotating platform. There is a space for accommodating the vehicle body between the two limit walls. A telescopic positioning structure is also arranged on the limit wall. The telescopic positioning structure includes a telescopic arm and a roller. The roller is arranged at the free end of the telescopic arm. The four corners of the vehicle body are all rounded. Corner slides are also arranged on the four corners of the vehicle body. The rollers at the free ends of the telescopic arms can enter the corner slides.

[0007] The battery swap slot is set on a rotating table, and a lifting structure is arranged in the battery swap slot. The telescopic end of the lifting structure has a supporting plate for supporting the battery. The two ends of the battery swap slot are connected with the charging compartment. A screw motor is arranged in the charging compartment. The screw motor is provided with two sliders. The two sliders are connected to the screw in the screw motor through an electromagnetic clutch. The lifting structure is fixed on the two sliders, and the telescopic end of the lifting structure has a supporting plate for supporting the battery.

[0008] As one embodiment, the limiting structure includes a servo motor, a gear column and a limiting plug plate; the servo motor is arranged in the accommodating space, the servo motor is connected to the control system, the control system can control the start and stop of the servo motor, a transmission gear is arranged on the output shaft of the servo motor, the transmission gear is meshed and connected with the gear column, the gear column is located on both sides of the placement slot, and limiting slideways are also arranged on both sides of the placement slot, the limiting plug plate is arranged in the limiting slideway, and the limiting plug plate can move linearly in the limiting slideway.

[0009] As one embodiment, the longitudinal section of the limit plug is in the shape of an "I", a rack is provided at the upper end of the limit plug, and the rack is meshed with the gear column. The upper end of the limit plug is located in the limit slide of the vehicle body, and the lower end of the limit plug is located at the bottom of the vehicle body. A shielding plate is also provided at the bottom of the limit plug, and the shielding plate is in the shape of a "U".

[0010] As an implementation manner, a pressure trigger switch is provided on the top wall of the placement slot, and the pressure control switch is communicatively connected with the servo motor.

[0011] As one embodiment, a plug-in channel is also provided on the side wall of the placement groove, the plug-in channel is connected to the placement groove, a connector is provided in the plug-in channel, the lower end of the connector is connected to the top end of the limiting plug plate, and the connector is used to connect to the discharge interface on the battery.

[0012] As one embodiment, the telescopic arm includes a hydraulic telescopic cylinder and a support arm. The hydraulic telescopic cylinder is arranged in a limiting wall and is connected to the support arm. The hydraulic telescopic cylinder can drive the support arm to extend and retract. An infrared sensing device is also arranged on the limiting wall, and the infrared sensing device is used to sense the direction of the vehicle body.

[0013] As one embodiment, the lifting structure is a telescopic cylinder, the support plate is fixed to the telescopic end of the telescopic cylinder, the support plate is in a "cross" shape, and a fixing claw is provided on the support plate, and the fixing claw is perpendicular to the support plate.

[0014] As one embodiment, there is an electric cylinder in the charging compartment, and a charging connector is provided at the telescopic end of the electric cylinder. The telescopic end of the electric cylinder can enable the charging connector to be inserted into the charging port of the battery, or to be pulled out from the charging port of the battery.

[0015] As one embodiment, the control system includes a PLC controller, a servo driver module, a solenoid valve module, a proportional valve module, a current detection module and a communication module. The PLC controller can control the operation of the servo motor through the servo driver module. The PLC controller can also control the hydraulic motor through the solenoid valve module and the proportional valve module.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: when the vehicle body moves to the rotating table, the vehicle body can be limited by the support arms on the limiting wall, so that the vehicle body stops on the rotating table, and through the rotation of the rotating table, the guide rails on the rotating table can be docked with other guide rails on the ground, so that the vehicle body can continue to travel along other guide rails on the ground after the rotating table rotates, so that the vehicle body can achieve stable steering operation at a large angle in a small space, and the lifting and lowering of the battery is controlled by the lifting structure in the battery exchange slot, and the battery is pushed into the placement slot at the bottom of the vehicle body through the lifting structure, and then the pressure trigger switch in the placement slot is pressed by the upper end of the battery to control the limiting structure to drive the shielding plate to block and limit the battery in the placement slot to prevent the battery from detaching from the placement slot, and the battery exchange slot and charging compartment in the rotating table can charge the battery and automatically replace the battery to prevent the ladle car from being unable to continue to be used during the charging process when the battery is out of power. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the ladle car and the turntable of the present invention;

[0018] Figure 2 It is a schematic diagram of the bottom structure of the vehicle body of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the rotating table of the present invention;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the rotating table of the present invention;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the vehicle body of the present invention;

[0022] Figure 6 It is a schematic diagram of the top view of the rotating platform of the present invention;

[0023] Figure 7 It is a schematic diagram of the gear column structure of the present invention;

[0024] Figure 8 It is a schematic diagram of the lifting structure of the present invention;

[0025] Fig. 9 It is a schematic diagram of the placement slot structure of the present invention;

[0026] Among them, 1-car body, 2-guide rail, 3-placing slot, 4-servo motor, 5-gear column, 6-limit plug plate, 7-transmission gear, 8-limit slide, 9-shielding plate, 10-pressure trigger switch, 11-plug-in channel, 12-rotating table, 13-limit wall, 14-battery replacement slot, 16-hydraulic telescopic cylinder, 17-support arm, 18-roller, 19-corner slide, 20-support plate, 21-telescopic cylinder, 22-screw motor, 23-charging compartment, 24-infrared sensing device. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be an electrical connection; it can be a hydraulic oil circuit connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] See also Figures 1 to 9As shown, a DC battery ladle car steering and battery replacement system includes a car body 1, a guide rail 2, a power supply platform and a control system. A power device is arranged in the car body 1, and the power device can move the car body 1. The guide rail 2 is arranged on the ground, and wheels are arranged under the car body 1. The car body 1 can move on the guide rail 2 through the wheels. A placement groove 3 is arranged at the bottom of the car body 1. The placement groove 3 is rectangular, and a battery can be placed in the placement groove 3. A accommodating space is also provided in the vehicle body 1, and a limiting structure is provided in the accommodating space. The limiting structure includes a servo motor 4, a gear column 5 and a limiting plug plate 6. The servo motor 4 is connected to a control system, and the control system can control the start and stop of the servo motor 4. A transmission gear 7 is provided on the output shaft of the servo motor 4, and the transmission gear 7 is meshed and connected with the gear column 5. The gear column 5 is located on both sides of the placement groove 3, and a limiting slide 8 is also provided on both sides of the placement groove 3. The limiting plug plate 6 is provided in the limiting slide 8, and the limiting plug plate 6 can move linearly in the limiting slide 8. The cross section of the limiting plug plate 6 is an "I" shape, and in the limiting A rack is provided at the upper end of the plug plate 6, and the upper end of the limit plug plate 6 is located in the limit slide 8 of the vehicle body 1. The lower end of the limit plug plate 6 is located at the bottom of the vehicle body 1, and is meshed with the gear column 5 through the rack. When the servo motor 4 drives the gear column 5 to rotate, the limit plug plate 6 can move in the limit slide 8. A shielding plate 9 is also provided at the bottom of the limit plug plate 6. The shielding plate 9 is "U"-shaped. When the limit plug plate 6 moves in the limit slide 8, it can drive the shielding plate 9 to move, thereby controlling the relative movement of the shielding plates 9, so that the two shielding plates 9 block the placement groove 3, or control the two shielding plates 9 to separate so that the placement groove 3 is completely exposed.

[0031] A pressure trigger switch 10 is arranged on the top wall of the placement slot 3, and the pressure trigger switch 10 is connected to the control system. When the pressure trigger switch 10 is subjected to pressure, the control system can control the servo motor 4 to operate, thereby driving the transmission gear 7 to rotate through the servo motor 4, and causing the transmission gear 7 to drive the gear column 5 to rotate. Since the gear column 5 is meshed with the rack at the upper end of the limit plug plate 6, the gear column 5 will control the limit plug plate 6 to move in the limit slideway 8 when it rotates, and the limit plug plate 6 will drive the shielding plate 9 to move, so that the shielding plate 9 shields the bottom of the placement slot 3, so that The battery in the placement groove 3 cannot be separated from the placement groove 3, and the battery can be prevented from shifting in the placement groove 3. A plug-in channel 11 is also arranged on the side wall of the placement groove 3. The plug-in channel 11 is connected to the placement groove 3. A connector is arranged in the plug-in channel 11. The lower end of the connector is connected to the top of the limit plug plate 6. When the limit plug plate 6 moves, it can drive the connector to move so that the connector can be inserted into the discharge interface of the battery in the placement groove 3 for connection. When the shielding plate 9 moves into place and the connector is connected to the discharge interface of the battery, the servo motor 4 stops working.

[0032] The power supply platform includes a rotating table 12, a limiting wall 13 and a power exchange slot 14. A guide rail 2 is also arranged on the rotating table 12. A hydraulic motor is arranged in the rotating table 12. The control system can control the rotation of the hydraulic motor. The rotation of the rotating table 12 can be controlled by the hydraulic motor. Two guide rails 2 are arranged on the rotating table 12, and two limiting walls 13 are vertically arranged on the rotating table 12. The two guide rails 2 are located between the two limiting walls 13. The limiting walls 13 can limit the vehicle body 1. When the rotating table 12 rotates, it can drive the two guide rails 2 and the limiting walls 13 to rotate, so that the two guide rails 2 on the rotating table 12 are docked with the guide rails 2 on the ground. A telescopic positioning structure is also provided on the limiting wall 13, and the telescopic positioning structure includes a hydraulic telescopic cylinder 16, a support arm 17 and a roller 18. The hydraulic telescopic cylinder 16 is provided in the limiting wall 13, and the hydraulic telescopic cylinder 16 is connected to the support arm 17. The hydraulic telescopic cylinder 16 can drive the support arm 17 to extend and retract. The telescopic arm is composed of the hydraulic telescopic cylinder 16 and the support arm 17. The control system can control the extension and retraction of the hydraulic telescopic cylinder 16. The roller 18 is provided at the free end of the support arm 17, and the four corners of the vehicle body 1 are all rounded. Corner slideways 19 are also provided on the four corners of the vehicle body 1. The roller 18 at the free end of the support arm 17 can enter the corner slideway 19, and the roller 18 can move in the corner slideway 19. The support arm 17 is driven to move by the hydraulic telescopic cylinder 16, and the roller 18 enters the corner slideway 19, so that the support arm 17 cooperates with the roller 18 to limit the vehicle body 1, so that the vehicle body 1 is fixed on the rotating table 12.

[0033] The above-mentioned battery exchange slot 14 is arranged on the rotating table 12, and the battery exchange slot 14 is rectangular. When the vehicle body 1 stops above the rotating table 12 and the vehicle body 1 is limited by the limiting wall 13, the position of the battery exchange slot 14 corresponds to the position of the placement slot 3. A support plate 20 is provided in the battery exchange slot 14, and a telescopic cylinder 21 is provided below the support plate 20. The support plate 20 and the telescopic cylinder 21 form a lifting structure. The control system can make the telescopic cylinder 21 drive the support plate 20 to rise and fall. After the support plate 20 rises, it can fit with the bottom of the battery in the placement slot 3. The support plate 20 is composed of a long plate and a short plate to form a "cross" shape, and a fixing claw is also provided on the short plate of the support plate 20. The fixing claw can better support and fix the battery. When the telescopic cylinder 21 extends, the support plate 20 rises, and when the telescopic cylinder 21 contracts, the support plate 20 descends, so that the support plate 20 drives the battery to rise or fall, and when the support plate 20 is fully risen, the control system will control the limit plug 6 to drive the baffle plate 9 to separate to both sides.

[0034] A charging compartment 23 is also provided in the battery swap slot 14. The charging compartment 23 is provided at both ends of the battery swap slot 14, and the charging compartment 23 is connected to the battery swap slot 14. A screw motor 22 is provided in the charging compartment 23 and the battery swap slot 14. The screw motor 22 is provided with two sliders. Both sliders are provided with an electromagnetic clutch. The control system can control whether the electromagnetic clutch is connected to the screw motor 22. When the electromagnetic clutch and the screw motor 22 are in a separated state, the screw motor 22 cannot drive the slider to move. When the electromagnetic clutch and the screw motor 22 are in a combined state, the screw motor 22 can drive the slider to move, thereby achieving the effect of individually controlling the movement of a certain slider. A lifting structure is provided on the two sliders. The screw motor 22 can drive the lifting structure to move through the slider, so that the lifting structure can move between the charging compartment 23 and the battery swap slot 14. A charging connector is also provided in the charging compartment 23, and a pushing rod is provided on the charging connector. The pushing rod can drive the charging connector to move so that the charging connector can be inserted into the charging port of the battery or pulled out from the charging port of the battery. The pushing rod is an electric cylinder, and the electric cylinder and the screw motor 22 are both connected to the control system. The control system can control the extension and retraction of the electric cylinder to realize the plugging and unplugging of the charging connector, and the control system can also drive the lifting structure to move through the screw motor 22. When the battery needs to be replaced, the lifting structure rises and brings the battery in the placement slot 3 to the battery exchange slot 14, and the battery in the lifting structure is driven to move to the empty charging compartment 23 through the screw motor 22, and the push rod is controlled to insert the charging connector into the charging port of the battery. At the same time, the fully charged battery in the charging compartment 23 on the other side of the battery exchange slot 14 moves into the battery exchange slot 14 with the movement of the lifting structure, and then the lifting structure lifts the battery and sends it to the placement slot 3, so that the upper end of the battery contacts the pressure-triggered switch 10 on the top wall of the placement slot 3, so that the limiting structure is operated, and the bottom of the battery in the placement slot 3 is blocked and limited by the shielding plate, and then the lifting structure descends into the battery exchange slot 14 and moves to the empty charging compartment 23 to complete the battery exchange operation.

[0035] An infrared sensing device 24 is also provided on the limiting wall 13, and the infrared sensing device 24 is connected to the control system. The infrared sensing device 24 can sense from which direction the vehicle body 1 enters the rotating table 12. When the infrared sensing device 24 senses that there is an object blocking it, the hydraulic telescopic cylinder 16 on the limiting wall 13 away from that direction drives the support arm 17 to extend to block the front end of the vehicle body 1. When the vehicle body 1 enters the rotating table 12, the corner slide 19 at the front end of the vehicle body 1 contacts the roller 18 in the support arm 17 to limit the vehicle body 1 and prevent the vehicle body 1 from leaving the range of the rotating table 12.

[0036] Among them, the control system includes a PLC controller, a servo driver module, a solenoid valve module, a proportional valve module, a current detection module and a communication module. The PLC controller can control the operation of the servo motor 4 through the servo driver module. The PLC controller can also achieve precise control of the hydraulic motor through the solenoid valve module and the proportional valve module. The PLC controller can also control the operation of each cylinder through the solenoid valve module. The current detection module can also detect whether the charging connector in the charging compartment 23 is in a working state. The mobile terminal can also issue instructions to the PLC controller through the communication module.

[0037] When in use, the control system controls the vehicle body 1 to move on the guide rail 2 on the ground, so that the vehicle body 1 moves to the rotating table 12. When the infrared sensing device 24 on the limiting wall 13 detects that the vehicle body 1 is blocked, the control system controls the hydraulic telescopic cylinder 16 at the other end of the limiting wall 13 to operate, so that the hydraulic telescopic cylinder 16 drives the support arm 17 to move, and blocks the front end of the vehicle body 1, so that the vehicle body 1 cannot continue to move forward, and the power device of the vehicle body 1 also stops running. If the battery does not need to be replaced, the rotating table 12 is rotated by the control system, so that the rotating table 12 drives the vehicle body 1 to rotate, and the guide rail 2 on the rotating table 12 is rotated to the guide rail 2 in the corresponding direction, so that the guide rail 2 on the rotating table 12 is docked with the guide rail 2 on the ground, and then the control system controls the hydraulic telescopic cylinder 16 to drive the support arm 17 to retract, so that the support arm 17 no longer blocks the vehicle body 1, and then the power device of the vehicle body 1 is started, so that the vehicle body 1 continues to move forward, thereby realizing the steering operation of the ladle car in a small field. If the battery needs to be replaced, the control system will issue a battery replacement command. When the battery replacement command is issued, when the front end of the car body 1 is limited by the support arm 17, the front end of the car body 1 blocks the infrared sensing device 24, so that the control system controls the support arm 17 at the end of the car body 1 to extend, and adjusts and positions the position of the car body 1 through the cooperation of the roller 18 and the corner slide 19 to prevent the car body 1 from shifting. When the support arm 17 is fully extended, the control system controls the screw motor 22 to operate. The control system can sense which charging compartment 23 is in an empty compartment state through the telescopic state of the push rod, and then move the lifting structure in the empty compartment to the battery replacement slot 14 and implement the battery replacement operation, and put the charged battery into the placement slot 3, so that the replaced battery enters the charging compartment 23 of the hole for charging, thereby avoiding the situation where it cannot be used during charging, and the process of replacing the battery is automatic operation, saving manpower, and the rotating table 12 can also be used to control the car body 1 to move in different directions to realize the steering of the ladle car in a small venue.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A DC battery ladle car steering and battery replacement system, comprising a car body, a guide rail and a rotating platform, wherein the guide rail is arranged on the ground, and wheels are arranged under the car body, through which the car body can move on the guide rail, characterized in that: The bottom of the vehicle body is provided with a placement groove, in which a battery can be placed, and a limiting structure is also provided in the vehicle body, which is used to fix the battery; A limit wall, a battery exchange slot and a charging compartment are arranged on the rotating platform. The rotating platform is connected to a hydraulic motor for driving the rotating platform. A guide rail is also arranged on the rotating platform. Two limit walls are arranged vertically and oppositely on the rotating platform. There is a space for accommodating the vehicle body between the two limit walls. A telescopic positioning structure is also arranged on the limit wall. The telescopic positioning structure includes a telescopic arm and a roller. The roller is arranged at the free end of the telescopic arm. The four corners of the vehicle body are all rounded. Corner slides are also arranged on the four corners of the vehicle body. The rollers at the free ends of the telescopic arms can enter the corner slides. The battery swap slot is set on a rotating table, and a lifting structure is arranged in the battery swap slot. The telescopic end of the lifting structure has a support plate for supporting the battery. The two ends of the battery swap slot are connected with the charging compartment. A screw motor is arranged in the charging compartment. The screw motor is provided with two sliders. The two sliders are connected to the screw in the screw motor through an electromagnetic clutch. The lifting structure is fixed on the two sliders. The screw motor can drive the lifting structure to move through the sliders, so that the lifting structure can move between the charging compartment and the battery swap slot.

2. According to claim 1, a DC battery ladle car steering and battery replacement system is characterized in that: The limiting structure includes a servo motor, a gear column and a limiting plug plate; the servo motor is arranged in the accommodating space, the servo motor is connected to the control system, the control system can control the start and stop of the servo motor, a transmission gear is arranged on the output shaft of the servo motor, the transmission gear is meshed with the gear column, the gear column is located on both sides of the placement groove, and limiting slideways are also arranged on both sides of the placement groove, the limiting plug plate is arranged in the limiting slideway, the limiting plug plate can move linearly in the limiting slideway, the longitudinal section of the limiting plug plate is an "I" shape, a rack is arranged at the upper end of the limiting plug plate, and the rack is meshed with the gear column, the upper end of the limiting plug plate is located in the limiting slideway of the vehicle body, the lower end of the limiting plug plate is located at the bottom of the vehicle body, and a shielding plate is also arranged at the bottom of the limiting plug plate, and the shielding plate is "U" shaped.

3. According to claim 2, a DC battery ladle car steering and battery replacement system is characterized in that: A pressure trigger switch is arranged on the top wall of the placement slot, and the pressure control switch is communicatively connected with the servo motor.

4. According to claim 2, a DC battery ladle car steering and battery replacement system is characterized in that: The side wall of the placement groove is also provided with a plug-in channel, which is communicated with the placement groove. A connector is provided in the plug-in channel, the lower end of the connector is connected to the top of the limiting plug plate, and the connector is used to connect to the discharge interface on the battery.

5. According to claim 1, a DC battery ladle car steering and battery replacement system is characterized in that: The telescopic arm includes a hydraulic telescopic cylinder and a support arm. The hydraulic telescopic cylinder is arranged in the limiting wall and is connected to the support arm. The hydraulic telescopic cylinder can drive the support arm to extend and retract. An infrared sensing device is also arranged on the limiting wall, and the infrared sensing device is used to sense the direction of the vehicle body.

6. According to claim 1, a DC battery ladle car steering and battery replacement system is characterized in that: The lifting structure is a telescopic cylinder, a support plate is fixed to the telescopic end of the telescopic cylinder, the support plate is in a "cross" shape, and a fixing claw is arranged on the support plate, and the fixing claw is perpendicular to the support plate.

7. According to claim 1, a DC battery ladle car steering and battery replacement system is characterized by: There is an electric cylinder in the charging compartment, and a charging connector is provided at the telescopic end of the electric cylinder. The telescopic end of the electric cylinder can enable the charging connector to be inserted into the charging port of the battery, or to be pulled out from the charging port of the battery.

8. According to claim 2, a DC battery ladle car steering and battery replacement system is characterized in that: The control system includes a PLC controller, a servo driver module, a solenoid valve module, a proportional valve module, a current detection module and a communication module. The PLC controller can control the operation of the servo motor through the servo driver module, and the PLC controller can also control the hydraulic motor through the solenoid valve module and the proportional valve module.

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